FUSHUN Metals

ASTM A519 4130 Alloy Steel Mechanical Tube

Group Hollow Bars
Min. Order 1 piece
Terms of Payment all
Update Time 2019-06-18
Item specifics
OD40-400MM
WT5-30MM
Delivery conditionQT
Surface conditionpeeled
  • Description
  • Product review

Specifications

1.A519 4130 steel tube
2.100% NDT
3.ISO9001, ISO/TS 16949
4.meet American standards
5.high accuracy

ASTM A 519 Chemical requirements

Chemical requirements of Grade 4130:

Carbon, %                           0.28-0.33

Manganese, %                        0.40-0.60

Phosphorus, max,  %                  0.040

Sulfur, max,  %                      0.040

Silicon, %                           0.15-0.35

Chromium, %                        0.80-1.10

Molybdenum, %                      0.15-0.25

Mechanical Properties

Grade

Designation

Condition

Ultimate

Strength, MPa

Yield

Strength, MPa

Elogation

in 2 in. or

50 mm, %

4130

SR

855

689

10

A

552

414

25

N

855

621

20

Delivery Condition

Designation

Symbol

Description

Cold finished (hard)

BK

Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.

Cold finished (soft)

BKW

The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming. (e.g. bending, expanding).

Cold finished and stress-relieved

BKS

Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.

Annealed

GBK

The last cold forming process is followed by annealing in a controlled atmosphere.

Normalized

NBK

The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

 Tests we apply to the tubes:

1) Chemical Composition Analysis

2) Mechanical Properties (Tensile strength, Yield strength,, Elongation, Hardness)

3) Technological Test (Flattening test, Flaring Test, Bending Test, Hydraulic pressure test)

4) Surface quality detection

5) Eddy-current examination

6) Visual test

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